Sand and water feeding mechanism



(No Model.)

A. LANDON.

SAND AND WATER FEEDING MECHANISM. No. 345,976. Patented July 20, 1886.

' WitqeSSeS: 111% 1:01 0W UNITED STATES PATENT OFFICE.

ALBERT LANDON, OF RUTLAND, VERMONT.

SAND AND WATER FEEDING MECHANISM.

BPECIPICATION forming part of Letters Patent No. 3475,976, dated July20, 1886.

Application filed Se iemher Q4, 1885. Serial No. 177,995. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT LANDON, of Rutland, in the county of Rutlandand State of Vermont, have invented a new and useful Improvement in Sandand WVater Feeding Mechanism; and I do hereby declare that the followingis a full and exact description of the same, reference being bad to theaccompanying drawings, and to the letters of reference marked thereon.

My invention relates to improvements in sand and water feeding mechanismfor use in connection with stone-sawing or other pur' V poses requiringa similar application of sand and water.

My object is to supply mixed sand and water to the saws or rubbing-bedsand afterward return it to the tank from whence it was taken, to befreed from all impurities, and to be reapplied to its original purposeon the stone or other bed. This I accomplish by mechanism so cheap andsimple and with machinery op erating so slowly and regularly that thedestructive effect ofsand and water common to all other devices forsimilar uses is almost completely overcome. Such mechanism isillustrated in the accompanying drawings,to which atten tion is invited,and in which Figure 1 represents my improved sand and water feedingmechanism, combined with a block of stone and a gang of saws, and Fig. 2a vertical section of the screw-pump employed for lifting the mixed sandand water.

Like letters of reference denote correspond ing parts.

A denotes a suitable frame-work or support consisting of four uprights,a a, and as many cross-bea1n,b b. WVithin this framework stands theinclined screw-pump B, made preferably in the form of the oldArehimedean screw, and inclosed by a metal or wooden casing, B, providednear its lower end with an annular series of paddles or agitators, B",for a purpose hereinafter explained. The spindle or shaft runningthrough the center of the screwpump B may be ahollow cylinder or pipe,and so arranged that its lower end may inclose and set on a pivot, c,placed in a tank, 0, which pivot should be sufficiently long to reach asocket inclosed in said spindle or shaft above the surface of the sandand water in the tank and out of the reach of its wearing action.

From the upper end of the pump projects the spindle c, which passesloosely through one .of the cross-beams b of the frame A, and carries apulley, d, which connects with a pulley, v

d, on the main shaft D by means of a crossbolt, (F. This main shaftD ismounted in the two front uprights a a of the frame A, and is driven by alarge drivingwheel, E, which imparts revolution tothe screw-pump Bthrough the intermediate gearing above described. The tank 0, whichsupports the lower end of the screwpump, is sunk below the level of thefloor and should set low enough to give proper fall to the water andsand returning from the saw-gangs. This tank receives the water and sandto be raised by the screw-pump, and is provided with a water-supplypipe, 6, having a cock, 6, to regulate the supply, and with anoverflow-pipe, f. Sand is fedinto the tank 0 from a hopper, F, whichshould be large enough to hold as much sand as may be required, Thishopper is located above the tank 0, and has a covering of wire screen,which separates all gravel and mud from the sand as it is thrown intothe hopper.

In the bottom of this hopper is arranged a screw-conveyer, F, operatedby a spur-wheel, G, mounted on one end of the same, an engaging pawl, G,and a pitman, H, pivoting to the vibrating arm of a lever, H, havingconnection with one end of the main shaft D. The feed or speed of thescrew-conveyer F is regulated by moving the vibrating arm of the lever Hthrough the screw-hub I, mounted on the side of one of the frontuprights a of the frame. On the revolution of the screw-pump 13 itspaddles 0r agitators thoroughly mix the sand and water and cause thelighterimpurities to rise and pass out through the overflow-pipe Thesand and water raised by the pump is discharged from its upper end intoa trough, J, from whence it is conveyed by a pipe, h, to

a trough, J, located above the stone to be sawed. This trough has aperforated bottom, through which the sand and water passes to the stoneand saw-gangs, and is caught by a pan, K, below the stone. From this panthe sand and water is returned to the tank 0 by means of a pipe, L. Thescrew-pump B should be long enough to discharge the sand and water at apoint high enough to have proper fall down to the saw-gangs, and thedistance between its threads is preferably about equal to one-fourth ofits diameter, and when thus constructed should stand on an angle ofabout sixty-five degrees.

Ascrew-pump like the one herein described, is made twelve inches indiameter and geared to make sixty-five revolutions per minute,wi1l lifteach minute eighty gallons of sand and water to any desired height. Toempty the pump, its motion is reversed by crossing the belt d the otherway.

Having thus described .my invention, what I claim, and desire to secureby Letters Patent, 1S?

1. In an apparatus of the character described, the combination of asand-and-water tank and a revolving shaft carrying a spiral, and havingbearings in the frame and tank, and inclosed by a cylinder havingpaddles or agitators on the outside of its lower end, substantially asdescribed.

2. In an apparatus of the character de scribed, the combination of asandand-Water tank having supply and overflow pipes, asandfeeding hopperarranged above said tank,

and a revolving shaft carrying a spiral, and

having bearings in the frame and tank, and inclosed by a cylinder havingpaddles or agitators on the outside of its lower end, substantially asdescribed.

3. In an apparatus of the character described, the combination of arevolving screwpump, a tank below the same, and a sandveyer arranged inthe bottom of the sandhopper,of intermediate gearing with thedriving-shaft for operating and regulating the speed of said conveyer,substantially as and for the purposes described.

5. In an apparatus of the character described. the combination, with thescrew-conveyer F of the hopper F, of the spur-wheel G, pawl G, pitmanH,screw-hub I, and lever H, havingavibrating arm passing through saidhub and pivoted to said pitman, substantially as described.

6. In an apparatus of the character de scribed, the combination ofarevolving shaft carrying a spiral, and inclosed by a cylinder havingpaddles or agitators on the outside of its lower end, and thesand-and-water tank 0, provided with the pivot 0, having its socket orbearing in said shaft above the surface of the sand and water,substantially as and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT LANDON.

VVit-nesses:

GEORGE B. SPENCER, G. CLARK.

